Match List-I with List-II and select the correct answer from the options given below:

List-I (Books)	List-II (Authors)
a. Interest groups in American Society	1. H. W. Ehrmann
b. Interest groups of four Continents	2. H. Zeigler
c. Anonymous Empire	3. Graham Wallas
d. Human Nature in Politics	4. Samuel Finer

A. a-1, b-2, c-3, d-4

B. a-2, b-3, c-1, d-4

C. a-3, b-4, c-2, d-1

D. a-2, b-1, c-4, d-3

Answer: Option D